Provided below are ELISA kits targeting spectrin beta, non-erythrocytic 2, a human protein encoded by SPTBN2. This protein is 2390 amino acids long, with a mass of 271.3 kDa, and is a member of the Spectrin family. 2 isoforms have been identified. This is reported to be a cytoplasmic protein. There is a noted implication in Spinocerebellar ataxia 5. Other alias names for this protein include: spectrin beta chain non-erythrocytic 2, beta-III spectrin, glutamate transporter EAAT4-associated protein 41, spectrin beta III sigma 2, spectrin non-erythroid beta chain 2, spinocerebellar ataxia 5 protein, and GTRAP41.